Development of a freezing methodology in liquid nitrogen of tree tomato (Cyphomandra betacea (Cav.) Sendt) seeds
The use of a farmer participatory approach in the development and dissemination of more sustainable cassava production practices
Primer Curso Intensivo de Adiestramiento en Producción de Arroz de Secano en Panamá (1979, Cali, Colombia). Informe final
Upland rice in Latin America : production, constraints and research proposals designed to improve productivity in the upland sector in the Latin American region